The list of buildings
The Hydro Plant increases factory output by 50%. It produces no pollution. It replaces any other power plant in the city. A Factory is required to build a Hydro Plant. A city must have a river within its radius to build a Hydro Plant.
One alternative to power generation utilizing coal or petroleum fuels is the hydroelectric power plant. This facility utilizes the energy of rapidly moving water to turn the turbines of its generators and produce electricity. In locations where a source of moving water is available, hydro plants offer a clean, safe alternative to coal, petroleum, and nuclear power generation. Hydro plants have their own set of environmental dangers, however. The disruption of a river's normal flow and the massive flooding of the land behind the facility's dam can destroy the habitat of the wildlife inhabiting the river basin.